Sony have revealed a complete list of content and offers available to PlayStation Plus subscriber until January 4th 2012 (unless otherwise stated). This month, Plus members can look forward downloading Tomb Raider: Underworld for free as well as PSOne Classic Cool Boarders.

From December 7th:

Tomb Raider: Underworld – 100% off

Cool Boarders (PSone Classic) – 100% off

Sneezies (minis) – 100% off

Orbit (minis) – 100% off

Split/Second: Velocity – 50% off

Split/Second: Velocity – Deadline DLC Pack – 100% off

Disney’s Bolt: The Game – 50% off

4 Elements HD – 40% off

Rocket Knight – 50% off

GoldenEye 007: Reloaded – One week early access demo until December 14th

Festive Dynamic Theme – 100% off

Stripes Part II Dynamic Theme – 100% off

PixelJunk: Sidescroller Player One Avatar – 100% off

PixelJunk: Sidescroller Player Two Avatar – 100% off

From December 14th:

Marvel Pinball – 100% off

Marvel Pinball: Captain America Table – 50% off

Marvel Pinball: Fantastic Four Table – 50% off

Burnout Crash – 50% off until December 28th

The Studio – Hanging Mobile Theme – 100% off

Please note: additional offers may become available throughout the month. Keep an eye on the Plus section of the PlayStation Store and the weekly Store update posts for more information.